main.m

//

//  main.m

//  Circle

//

//  Created by macsir on 12-10-25.

//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

//

#import<Foundation/Foundation.h>

#import"Circle.h"

#import"Rectangle.h"

#import"PblateSphereiod.h"

#import"Triangle.h"

NSString *colorName (ShapeColor colorName);

void drawShapes (id shapes[],int count);

void drawTriangle(ShapeRect bounds,ShapeColor fillColor);

void drawEgg(ShapeRect bounds,ShapeColor fillColor) ;

void drawRectangle(ShapeRect bounds,ShapeColor fillColor) ;

void drawCircle(ShapeRect bounds,ShapeColor fillColor) ;

int main (int argc,constchar * argv[])

{

//    @autoreleasepool {

//        

//        // insert code here...

//        NSLog(@"Hello, World!");

//        

//    }

//    Circle circle;

//    circle.draw();

    id shapes[4];

    ShapeRect rect0 = {0, 0, 10, 30};

    shapes[0] = [Circlenew];

    [shapes[0]setBounds:rect0];

    [shapes[0]setFillColor:kRedColor];

    ShapeRect rect1 = {30, 40, 50, 60};

    shapes[1] = [Rectanglenew];

    [shapes[1]setBounds:rect1];

    [shapes[1]setFillColor:kGreenColor];

    ShapeRect rect2 = {0, 0, 10, 30};

    shapes[2] = [PblateSphereiodnew];

    [shapes[2]setBounds:rect2];

    [shapes[2]setFillColor:kBlueColor];

    ShapeRect rect3 = {47, 32, 80, 50};

    shapes[3] = [Trianglenew];

    [shapes[3]setBounds:rect3];

    [shapes[3]setFillColor:kRedColor];

    drawShapes(shapes, 4);

    return 0;

}

void drawShapes (id shapes[],int count)

{

    int i;

    for(i = 0; i<count; i++) {

        [shapes[i] draw];

    }

}//drawShapes

//

//  Circle.h

//  Circle

//

//  Created by macsir on 12-10-25.

//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

//

#import<Foundation/Foundation.h>

#import"PublicData.h"

@interface Circle :NSObject

{

    ShapeColor fillColor;

    ShapeRect bounds;

}

- (NSString*) getColorName: (ShapeColor) colorName;

- (void) setFillColor: (ShapeColor) fillColor;

- (void) setBounds: (ShapeRect) bounds;

- (void) draw;

@end//Circle

//

//  Circle.m

//  Circle

//

//  Created by macsir on 12-10-25.

//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

//

#import"Circle.h"

@implementation Circle//用于定义类的公共接口

- (NSString *) getColorName: (ShapeColor)c 

{

    switch (c) {

        case kRedColor:

            return @"Red";

            break;

       casekGreenColor:

            return @"Green";

            break;

        case kBlueColor:

            return @"Blue";

            break;

        default:

            break;

    }

   return@"no clue";

}//myColorName

- (void) setFillColor: (ShapeColor) c

{

    fillColor = c;

}//setFillColor

- (void) setBounds: (ShapeRect) b

{

    bounds = b;

}//setBounds

- (void) draw

{

   NSLog(@"Drawing a circle at (%d %d %d %d) in %@",bounds.x ,bounds.y,bounds.width,bounds.height, [selfgetColorName:fillColor]);

}

@end

//

//  Rectangle.h

//  Circle

//

//  Created by macsir on 12-10-25.

//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

//

#import<Foundation/Foundation.h>

#import"PublicData.h"

#include"Circle.h"

@interface Rectangle :Circle

@end

//

//  Rectangle.m

//  Circle

//

//  Created by macsir on 12-10-25.

//  Copyright (c) 2012年 __MyCompanyName__. All rights reserved.

//

#import"Rectangle.h"

@implementation Rectangle

@end

#include "Circle.h"

@interface Rectangle :Circle

    NSLog(@"Drawing a circle at (%d %d %d %d) in %@", bounds.x , bounds.y, bounds.width, bounds.height, [selfgetColorName:fillColor]);

这几天做一个自动扫描SD卡上所有APK文件的小工具，扫描过程中会把APK添加到LISTVIEW中显示，结果出现以下错误：（有时候触摸更新数据时候，触摸listview也会报错）

10-26 18:30:45.085: E/AndroidRuntime(7323): java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. [in ListView(2131296280, class android.widget.ListView) with Adapter(class com.souapp.appmanager.ApkListAdapter)]

10-26 18:30:45.085: E/AndroidRuntime(7323): java.lang.IllegalStateException: The content of the adapter has changed but ListView did not receive a notification. Make sure the content of your adapter is not modified from a background thread, but only from the UI thread. [in ListView(2131296280, class android.widget.ListView) with Adapter(class com.souapp.appmanager.ApkListAdapter)]

虽然自己很确定没有多线程操作，但是有人说listview本来就是线程不安全的，这个不关心了，看了国外一个开发者的方法很简单：

ListView.requestLayout();
Adatper.notifyDataSetChanged();

题外话：解决问题还是从本质上思考，从错误信息上提示，一定避免多线程去更新adapter的数据，为此我把多线程递归遍历SD卡目录修改成了单线程；

有的时候看到别人的一些补救方法未真正解决问题。

   他抛下了自己一手打造的苹果，因病痛折磨离开了。对于这位巨人，我到底想说些什么呢？其实我也不太知道，有时候我是不太会说话的，只能说到哪就是哪了。